Progressive Suspension 412 Series Shock for Harley FXD – 12.5 inches, Black Finish

412 Series Shock - 12.5" - Standard - Black - FXD

The Progressive Suspension 412 Series Shock (Part Number: 412-4038B) is engineered specifically for Harley-Davidson FXD models, offering a practical upgrade to enhance your motorcycle’s suspension performance. Featuring a durable and straightforward design, these shocks are built to withstand demanding riding conditions while providing a cost-effective improvement over stock components. The black finish adds a sleek, understated look that complements various bike styles.
Designed with rider customization in mind, the 412 Series shocks incorporate a five-position cam-style spring load preload adjuster, allowing you to easily fine-tune your ride for optimal comfort and handling. These shocks are compatible with multiple styling options, including full show-chrome or black covers, as well as chrome or black springs and end caps, giving you versatility to match your bike’s aesthetic preferences. Made in the USA, these shocks are measured from center-of-eyelet to center-of-eyelet, ensuring reliable fitment on Harley FXD models.
When installing, note that on models from 1986 to 2015, modifications to or spacing of the chain or belt guard may be necessary to ensure proper clearance. Slight variations in shock length—either longer or shorter than stock—can subtly alter the head angle, affecting steering response: longer shocks may provide quicker steering, while shorter shocks can result in slower handling. For bikes operated near maximum load capacity over half the time, Heavy Duty applications are recommended to handle increased stresses. It is important to verify that wheel travel can accommodate any changes in shock length without causing clearance issues, such as contact with the swingarm, exhaust, chain or belt guard, or tires, before installation or purchase.
These shocks are approved for road use where applicable, and their robust construction ensures durability and performance under various riding conditions. Whether you seek improved ride quality, better handling, or a personalized look, the Progressive Suspension 412 Series Shock provides a reliable and versatile upgrade for your Harley FXD motorcycle.

Features:

• Designed specifically for Harley FXD models for optimal fit and performance

• Five-position cam-style spring preload adjuster for easy ride tuning

• Available in multiple styles including full show-chrome or black covers

• Made in the USA with durable construction and reliable materials

• Measurement from center-of-eyelet to center-of-eyelet ensures proper fitment

• Compatibility with various styling options including chrome or black springs and end caps

• Adjustable length option to modify steering response and handling

• Heavy Duty applications recommended for high-load conditions

• Requires modification or spacing of chain or belt guard on certain models for proper clearance

• Road-legal and approved for street use where applicable